画像透かし
「画像透かし」は画像とデザインに使えるブラウザツールです。入力内容と結果は通常この端末内で処理され、登録は必要ありません。
使い方
使い方
- Choose the main JPEG, PNG, or WebP image.
- Choose a text or image watermark, then set its size, opacity, and position.
- Apply the watermark, review the full-size result, and download it in the main image format.
Text and logo watermarks
Text mode provides a color and relative font-size control. Image mode accepts a JPEG, PNG, or WebP logo and scales it proportionally from its original aspect ratio.
Local output with clear limits
Both images stay in your browser. The result keeps the main image dimensions and format; PNG and WebP can retain transparency, while canvas output does not preserve source metadata.
よくある質問
あわせて知りたいこと
Can I add a transparent logo?
Yes. Use a PNG or WebP watermark image with transparency.
Can I move the watermark freely?
This version provides nine consistent positions from top left through bottom right, with a small edge inset.
Does the tool upload either image?
No. The main image and optional watermark image are processed locally in your browser.